2014-08-04 Andy Leung
* 3.1
* Convert the iteration code of EM to all C++ (or Rcpp)
* Convert the subsampling and concentration part of emve to all C++ (or Rcpp)
* Include the initial estimates mu0 and S0 as an attribute of the GSE class
* Include the imputed data matrix, weights, and first deriviative of weights used in the location estimation as new attributes of the GSE class
* Create a new accessor -- getInitial -- for the new attributes of the GSE class (see above bullet)
* Include TSGS, a new function that computes 2SGS estimate for cell- and case-wise outliers
* Include Geochemical data that is analyzed in the 2SGS article
2013-06-04 Andy Leung
* 3.0
* Convert to S4 object system
* Convert the iteration code of GSE to all C++ (or Rcpp)
2013-02-13 Andy Leung
* 2.4.2
* Fix the bug in rcondCov, now calculated condition number based on eigenvalues
2012-08-04 Andy Leung
* 2.3
* Include function to plot and print the result for different estimators
* Fix the rand seed for emve C++ code
* Update all the manuals
2012-07-15 Andy Leung
* Fix the bug of asymetric covariance matrix when iteration is large
* Algorithm stop when negative eigenvalue appears
2012-06-12 Andy Leung
* 2.2
* Include a line for only allowing up to dimension 50
* Include GMME function
* Extract cov.EM and slrt functions (and their related) from robmiss packages
* No dependency on robmiss package
2012-06-10 Andy Leung
* 2.1
* Include the function to compute Quadrant Covariance
* Include the function to compute Composite S-estimator
* Include the version of GSE with initial estimator as quadrant covariance
2012-05-12 Andy Leung
* 2.0
* fixed bugs in the iterative step of GSE code, i.e. computing GSE based on fixed initial estimator
* fixed bugs in computation of scale in GSE
* include GSE with fixed point approach
2012-04-30 Andy Leung
* 1.1
* GSE is rewritten in C++ at least for the iterative step but not the loop
* Reference manual for GSE is included
* Faster implementation of both EMVE and GSE by performing the computation
on groups with same missing patterns
* Code for simulating contaminated data set is included
2012-03-17 Andy Leung
* 1.0
* Depends: R (>= 2.14.1), robmiss, Rcpp (>= 0.9.8), RcppArmadillo (>= 0.2.34)
* Code for GSE computation is included
* Faster implementation of both EMVE scale and partial mahalanobis distance
* Computation of ML-estimate of location and scatter for each candidate within
the resampling procedure is restricted to only 5 iterations
2012-02-14 Andy Leung
* 0.1
* Reference manual for mve.missing.C is included
* Computation of scale for EMVE and partial mahalanobis distance is coded in C++
2012-01-14 Andy Leung
* 0.0
* Depends: R (>= 2.14.1), robmiss, Rcpp (>= 0.9.8), RcppArmadillo (>= 0.2.34)
* Only include the function to compute EMVE
* Resampling procedure is coded in C++
* No code for GSE computation is included